Fundamentals of circuit analysis, analog electronic technology, digital electronic technology, high-frequency circuit, electronic circuit EDA technology, signal and system, digital signal processing, single chip microcomputer foundation, microcomputer principle and application, programmable logic device principle and application development, electronic measurement technology, computer network technology, FORTRAN language design, C language design, Protel circuit design and plate making, calculation method, antenna and radio wave, electromagnetic field and electromagnetic wave, automatic control principle, modern communication principle, etc.